Caterpillar tread.
We were just watching QI quite peacefull and now we're arguing about whether or not it's called "caterpillar tread" because of the way that caterpillers travel."
Hint: I think it is.
We were just watching QI quite peacefull and now we're arguing about whether or not it's called "caterpillar tread" because of the way that caterpillers travel."
Hint: I think it is.